A friend told me that so I am not 100 percent sure and on the tag it says " the only airline approved bag" - you are right about Jessica Simpson ( lol) and I know hard sided crates are allowed. Honestly I don't think it is that big of a deal with the bag- I flew Continental and they didn't even say anything just wanted to see proof that I paid for him- didn't even ask for the health certificate. I would recommend calling the airlines. |